 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.internal.operations;

 import java.lang.reflect.*;

 import org.eclipse.core.runtime.*;
 import org.eclipse.update.configuration.*;
 import org.eclipse.update.core.*;
 import org.eclipse.update.operations.*;

 public class RevertConfigurationOperation extends Operation implements IRevertConfigurationOperation {

     private IInstallConfiguration config;
     private IProblemHandler problemHandler;

     public RevertConfigurationOperation(
         IInstallConfiguration config,
         IProblemHandler problemHandler) {
         super();
         this.config = config;
         this.problemHandler = problemHandler;
     }

     /* (non-Javadoc)
      * @see org.eclipse.update.operations.IOperation#execute(org.eclipse.core.runtime.IProgressMonitor)
      */
     public boolean execute(IProgressMonitor monitor, IOperationListener listener)
         throws CoreException, InvocationTargetException {
         IStatus status =
             OperationsManager.getValidator().validatePendingRevert(config);
         if (status != null && status.getCode() == IStatus.ERROR) {
             throw new CoreException(status);
         }

         try {
             ILocalSite localSite = SiteManager.getLocalSite();
             localSite.revertTo(config, monitor, problemHandler);
             localSite.save();
             return true;
         } catch (CoreException e) {
             UpdateUtils.logException(e);
             throw e;
         }
     }
 }

